Bug summary

Thanks for matplotlib!
tripcolor fails if colors are passed with named argument i.ec=values instead of justvalues. The error is not very informative and it seems a dangerous practice to ignorekwargs and only useargs.

  File"/mnt/session_space/conda_envs/latest39/lib/python3.9/site-packages/matplotlib/tri/tripcolor.py", line 57,in tripcolor    C = np.asarray(args[0])IndexError: list index out of range

Code for reproduction

plt.tripcolor(vertices[:,0],vertices[:,1],c=values,triangles=triangles)

Actual outcome

  File"/mnt/session_space/conda_envs/latest39/lib/python3.9/site-packages/matplotlib/tri/tripcolor.py", line 57,in tripcolor    C = np.asarray(args[0])IndexError: list index out of range

Expected outcome

a successful plot.

Additional information

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Operating system

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Matplotlib Version

3.5.1

Matplotlib Backend

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Python version

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Jupyter version

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Installation

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